Sole-rounding machine



Nov. 25, 1930. R. B. WOODCOCK ET AL 1,782,494

SOLE ROUNDING MACHINE Filed Feb. 19," 1926 Patented Nov. 25, 1930 UNITED STATES PATENT OFFICE A nnemA n novnvwoonoocx Anntrnoivres AUBREY KnsTn L, or nnlionsrnn nnonnnn, "ASSIGNORS TO onrrnn snon MACHINERY CORPORATION, oFrArERs'on, vnw

Jnnsnv, A oonronn'rioiv OF NEW" JERSEY so E-Rounnme MACHINE Application filed EebiuaryJB, 1926 Serial No.

, T his inventionrelates to solo rounding ma chines wherein akniit'e and a pattern are relatively movableflto causefthe, pointof op:

eration of theknife to be transferred around the pattern. As therein illustrated the 'invention is embodied in a machine in which the pattern is stationary and therkn fe is caused to travel around :the pattern" though certain features of theinvention'are not restricted in their application to machines of this particular type but are capable of embodiment alsoininachines wherein the relativernovement of the knife and the pattern is obtained by rotating the pattern i5 An example of a sole rounding, machine in which the knife travel-saround the pattern found in United StatesLetters Patent No.'882,009, granted March 17, 1908, on application of B. F. Mayo. The machine q to disclosed in this patent is provided with stop mechanism the construction andniode of operation, of which is described in detail in United States Letters Patent No.f1',091',07l, granted March 24, 1914, also onapplication of B. F. Mayo. This stop mechanism functions to allow the 'knife,'aftei' completing its circuit of the patterintocontinue a short distance beyonditsstartingpoint, under the momentum of the knifesupporting means, so toinsure complete rounding of the sole, and then to move the knife in the oppositedirection to return it to starting position, the return of the knife being eii'ected by thereaction of a springarranged to be stressed by the excess movement or overthrow of the knife supporting means.

One object of the present invention to provide improved and. simplified inebhanism which will operate still more quickly and reliably to returnthe rounding knife to starting position at the completion oil its excess or overthrow movement.

With this object in; view .one feature of this invention residesinthe combination, in a rounding machine having a knife and a pattern which are "relatively movable to,

transfer the'point ofoperationof the knife around the pattern, ofknife driving 'mechanism which is movablelunder momentum after being disconnected from its source of 89,415, and in Great Britain March 13, 1525.

the k nife and the pattern to carry the point of operation of the knife past the, starting point, means normally disconnectedfrom. the

tive movement of ,theknife, and thepatt'ern powerto'eifect excess relative movement of comprises ,a spring, and thisspring is adapted to be connected with a driving s'haftf'by a clutch in such a way that the ispringfwill first absorbthe momentuinot the knife driv ing mechanismduring the overthrow of the knife and thereafter ,will react to return the knife to starting position. One member of the clutch is in the form of aj drum on" the driving shaft while the other clutch member consistsof a split bandwhich encircles the drum and is connected with a lever Which controls the starting and stopping! of the machine, the arrangement being such that when'the leveris actuated tofstartthe machine the band is -relea sedifrom the drum and when the leveris actuated to stop themachine the band is clutched to; the drum. The

illustrated arrangement'embodies the further featurethatua limiting stop, is withdrawn from an abutment during the stressing of the spring and is moved into engagement with Stud. abutment by the reactlonof the spring to determine positively theposition at which the knife, shall come to rest at the end of its return movement. a i

In. themachine disclosed in the Letters Patent firstlabove referred to the rounding knife, atthe completion ofyitsexcessor overthrow move1nent,[rides along theuedge of, the pattern during its return movement and when it finally comes to rest it isstill in contact with the pattern. Itisisometimes desir able, however, and it hasheretofore been proposed to move theknife away from the edge of thepatternduring its return movement to set it at'a point spaced from the pattern so that it may function as a gage to position a succeeding sole blank with the edge of the blank properly overlapping the edge of the pattern at the point where the knife is to bcgin its cutting action.

With the foregoing in mind another object of the invention is to provide positively acting means for insuring that the knife, instead of following the contour of the pattern upon its return or retrograde movement, will part con'ipany with the pattern.

To this end, and in accordance with another feature of the invention, there is provided, in a sole rounding machine wherein a pattern and a knife are relatively movable to transfer the point of operation of the knife around the pattern and wherein there is further relative movement of the knife and the pattern under momentum to insure complete rounding of the sole, resilient means constructed and arranged to be stressed by said further relative movement to effect limited relative retrograde movement of the knife and the pattern at the end of a rounding operation, and automatic means operated by said retrograde movement for separating the knife and the pattern. In the illustrated embodiment of the invention the knife, which is arranged to travel around the pattern beyond the starting point and thereafter to return to the starting point, is mounted upon a knife support which is normally moved relatively to a moving carrier to hold the knife against the pattern as the knife is operating, and the separation of the knife and the pattern is effected by a means for looking the knife support to the carrier which means is rendered effective by the carrier moving means during the return movement of the knife.

The above and other objects and features of the invention will become apparent from the following description of the preferred embodiment of the invention illustrated in the accompanying drawings in which Fig. l is a View, partially in side elevation and partially in section, of a portion of the mechanism for effecting the return movement of the knife, and

Fig. 2 is a plan View of a portion of a sole rounding machine showing particularly the mechanism for retracting the knife from the pattern during the return movement of the knife.

In the drawings the invention. is shown as embodied in a machine such as that disclosed in Letters Patent No. 882,009, hereinbeforc referred to, and which in common with said machine comprises a stationary pattern indicated in dot and dash lines at 4 in Fig. 2, a rounding knife 6, a knife support consisting of an arm 8 rigidly secured to a segmental plate 10, a carrier 12 to which the plate 10. is pivotally connected, a rotary table or support- 14 upon which the carrier 12 is slidingly mounted for inward and outward movement relatively to the pattern, a cam 16 for imparting inward and outward movement to the carrier 12, a main driving shaft 18, and a frame, a portion of which is shown at 20 in Fig. 1, for supporting the various parts of the machine.

In the illustrated machine the construction of the operating parts above referred to and, except as hereinafter described, their mode of operation is substantially the same as that set forth in said patent to which reference may be had for a detailed description of parts or movements not herein fully shown or described. For present purposes, however, it will be sufficient to understand that as the knife travels around the pattern it is held yieldingly in engagement with the edge of the pattern by means of a spring-actuated pinion (not shown) which is confined within a housing 22, the pinion meshing with the teeth of a segmental rack 24 on the knife carrier 12.

The means which permits the knife to travel beyond its starting point after it has completed a circuit of the pattern and which causes the knife thereafter to be returned to its starting position comprises a drum 20 formed on the side. of a wheel 28 which is fast upon the main shaft 18, the wheel 28 corre sponding to the wheel h of the above-mentioned Letters Patent No. 1,091,071. Encircling the drum 26 is a band 80 which is capable ofbeing gripped to the drum. For this purpose one end of the band 30 is connected at 31 to a lever 32 pivoted at to an arm 34 which is mounted to swing about the driving shaft 18. The other end of the band 30 is connected by an adjustable link 35 to the pivot 33 of the lever 32, the construction being such that if the lever 32 is rocked about its pivot the band 30 is gripped to or released from the drum 26 and when the band is gripped to the drum the arm 34 and the lever 32 will turn with the drum about the axis of the driving shaft 18.

Pivotally connected to the arm 34- is one end of a plunger 36 slidably mounted in a. tubular casing 38 pivoted about midway between its ends upon a horizontal pivot 40 on the machine frame. 'A spring 42 inside the casing 38 surrounds the plunger 36 and hears-1 at one end on a head la formed on the end of the plunger remote from its pivotal connection and at the other end against a cap -it5 of the casing, the arrznigcnicut lacing iu'h that when the'band 30 is (Jlllitllttl to the drum 536 the arm 3i moves with the drum and the spring 42 is compressed. An opening in i..- formcd in the side of the casing 238 in such a position that upon the return movement of the plunger 36. the head 4.4 of the plunger 36, which is a close sliding lit in the casing 38. forces the air within the cylinder out through the opening 48 freely until the head passes the opening 48, thus trapping a small qt tity of air in the closed end of the (as 'alloi-ving theplnngerto seek its extreme posipivoted at 54 on the frame of the i ma chine, the hell-crank lever having one arm arranged to engagegthe lever and another arm connected to a starting lever 56 correspending to the lever 7L ofthe machine shown in theaforementioned Letters *Patent No. 1,091,071. p

i When the starting lever is actuated by the operator to startthe machine the lever 32 is swung about its pivot'33 by thebell crank lever 52 to release'the band 80.7and whenthe starting lever is autonilatically re: leased and returned to stop the machine the lever 32 is swung in the opposite direction by its spring to clutch the band 30 to the drum and during the contiijluedJmove nent of the rounding knifemechanism under its own momentum the spring 42 of the plunger 36 is compressed and gradually stops the knife mechanism. The spring 42 then eiipan us and hereinbefore described.

returns'thelniife to its starting position, a collar 58 fixed 'on the plunger. 36 engaging the cap lG on the casing 38 to limit the return movement of the plunger.

During its return movement the knife is prevented from returnmgalong the edge of i and in contact with the edge of the pattern 4 an d the trimmed sole thereon by mechanism (Figure which locks the segmental plate 10 to the carrier 12 so that said plateis prevented; frombeingswung about its pivotal connection WitliSaid carrier; b the springactuated pinionwithin the housing 16 said carrier is mover backto starting position as The return movement of the carrier 12 isin such a direction that with the plate 10thus locked to the carrier the knife will be movcdawa from the sole edge into position toact as a gage for a fresh blank. A fresh blank may then read he placed in the machine with its edg er lapping the pattern all the way round out the v of nn-tnually withdrewind the knife. A

The mechanism just referred to for preventing the return movement of the knife to the pattern comprises a ratchet segment 60 fixed to the plate 10 and a pawl 62 piv oted on the carrier 12 and actuated by a springfit to move it into engagement with the teeth of theratchet segment 60 to hold the plate 10 againstmovement towards the sole.- The pawl 62 is moved away from the ratchet teeth 60 during the operation of the machine by an arm 66 pivoted on the carrier 12 and operated by aspring 68 which is stronger than the pawl spring 64. The pawl 62 has an arm 70 which carries a pin 72 extending through a slot 74 in a link 7 6. i The link 76 is pivotally connected to the arm 66 bya pin 78.. to which is pivoted a pawl 80 urged by aspring82 into engagementwith ratchet .teeth84 formedlon a block fixed to the cam; During the last portion of the forward "movement ofthe carrier the pawl 80 ,slips overthe teeth 84and duringthe return movement. ofthe carrier the pawl 80 engages one of the teeth and thereby causes the arm 66 to be swung about its pivot to move the end ofthe slot 74 away from the pin 72 to allow the spring 64Lto move the pawly62 into engagement with one ofthe teeth 60 to holdthe plate. 10 from .movingunder the influence ofits spring..inwarcl towards the sole. As the carrier 12 completes its turn movement the knife is therefore can ried away from the sole into the position shown in Figure 2. Forward jinovementloi' the carrier 12at.the beginningof the. neXt operation relieves the thrust of the pawl .80

upon the arm .66 and allows thesprinfg-68 to move the link 76 endwise untill he endof the slot 74 engages the pin 7 2and then 1moves the pawl 62 out of engagementwitlrthe'teeth 60; to free the plate for movement towards the sole. A suitable stoppin 86 limits the swingofthe'arm 66 undersactionpf its spring 68. The link 76 haswfixedtoit by a screw 88 a slottedvplate 90? through which LettersPa-tent of the United States is 1. In a sole "rounding machine where n a knife and a pattern are relatively moveable to transfer the point of operation. of the knife around the pattern,fin combination, knife driving mechanism movable .undcr. momentum after being. disconnected from its source of power to effect excess .ehttivc movement of the knife and the pattern tr carry the point ofoperation ofthe knife past the starting point, means normally disconnected from the knife driving mechanism 6 for reversing the direction of relative movementof the knife and the pattern, and a resiliently actuated device for connecting said'means with the knife driving mechanism as the latter is disconnectedfrom its source of power.

2. In a sole rounding machine wherein a knife and a pattern are relatively movable to transfer the point of operation of the knife around the pattern, in combination, knife driving mechanism movable under momentum after being disconnected from its source of power to effect excess relative movement of the knife and the pattern to carry the point of operation of the knife past the starting point, means normally disconnected from the knife driving mechanism for cushioning the excess relative movement of the knife and the pattern and thereafter reversing the direction of said relative movement, and a device for connecting said means with the knife driving mechanism as the latter is disconnected from its source of power.

3. In a sole rounding machine wherein a knife and a pattern are relatively movable to transfer the point of operation of the knife around the pattern, in combination, knife driving mechanism movable under mo mentum to effect excess relative movement of the knife and the pattern to carry the point of operation of the knife past the starting point, means including a control member for connecting the knife driving mechanism with a source of power and for disconnecting it therefrom, means normally disconnected from the knife driving mechanism for limiting the motion of the knife past the starting point and for reversing the direction of movement of the knife, and a device rendered operative by movement of the control member in disconnecting the knife driving mechanism from its source of power for connecting said reversing means with the knife driving mechanism.

4. In a sole rounding machine wherein a knife and a pattern are relatively movable to transfer the point of operation of the knife around the pattern, in combination, knife driving mechanism movable under momen tum after the knife driving mechanism has been disconnected from its source of power to effect excess relative movement of the knife and the patternto carry the point of operation of the knife past the starting point, a spring, a clutch one member of which is connected with said mechanism, and connections between the other clutch member and the spring as the source of power is disconnected from the knife driving mechanism constructed and arranged to stress the latter during movement of the point of operation of the knife past the starting point and to reverse the direction of movement of said mechanism to effect relative retrograde movementof the knife and the pattern upon reaction of said spring.

In a sole rounding machine wherein a knife and a pattern are relativelymovable to transfer the point of operation of the knife around the pattern, in combination, driving mechanism movable under momentum to effect further relative movement of the knife and the pattern to carry the point of operation of the knife past the starting point, a spring, a clutch one member of which is connected with said mechanism, connections between the other clutch member and the spring constructed and arranged to stress the latter during movement of the point of opera tion of the knife past the starting point and to reverse the direction of movement of said mechanism to effect relative retrograde movement of the knife and the pattern upon reaction of said spring, and means for gradually arresting and cushioning the said reverse movement of the knife driving mechanism.

6. In a sole rounding machine wherein a knife and a pattern are relatively movable to transfer the point of operation of the knife around the pattern, in combination, a carrier for said knife, knife driving mechanism movable under momentum after the driving mechanism has been disconnected from its source of power to effect further relative movement of the knife and the pattern to carry the point of operation of the knife past the starting point, a spring, a clutch one member of which is connected with said mechanism, connections between the other clutch member and the spring constructed and arranged to operate as the knife driving mechanism is disconnected from its source of power to stress the latter spring during movement of the point of operation of the knife past the starting point and to reverse the direction of movement of said mechanism to effect relative retrograde movement of the knife and the pattern upon reaction of said spring, and means for effecting separation of the pattern and the knife carrier during said retrograde move ment.

7. In a sole rounding machine wherein a knife travels around a pattern, in combination, knife driving mechanism movable rnder momentum after the source of power has been disconnected from the knife driving mechanism to carry the knife past the starting point, a spring, a clutch one member of which is connected with the knife driving mechanism, and connections between the other clutch member and the spring constructed and arranged to operate as the source of power is disconnected from the knife driving mechanism to compress the spring during movement of the knife past the starting pointand to reverse the direction of movement of the knife driving mechanism to return the knife to starting position upon reaction of the spring. 7

8. In a sole rounding machine wherein a knife travels around a pattern, in combination, knife driving mechanism movable under momentum to carry the knife past the starting point, a spring, a clutch one member of which is connected with the, knife driving mechanism, connections between the other clutch member and thejspring constructed and arranged to compress the spring during movement of the knife past thestarting point and to reverse the direction of movement of the knife driving mechanism to return the knife to starting position upon the reaction of said spring, said connections being arranged gradually to arrest the retrograde movement'of theknife, and means for positively limiting the extent of retragrade n'iovement of the knife.

9. In a sole rounding machine wherein a knife, after traveling around a pattern, inoves ,1')ast its starting point and then is given a retrograde movement, a. knife support, a movable carrier upon which the knife support is movably mounted, means tending to move the knife support relatively tothe carrier to hold the knife against the pattern during the travel of the knife around the pattern, means for locking the knife sup-- port to the carrier, mechanism for 1na1ntamin the lockin means retracted durin forward movement of the knife, and means operative during the retrograde movement of the knife to release the locking means to cause the knife to be withdrawn from the pattern. a

10. In a solerounding machine wherein a pattern and a knife are relatively movable to transfer the point of operation of the knife around a pattern and to a pont beyond the starting point and thereafter to produce relative retrograde movement be- 1 tween the pattern and the knife, a knife support, a carrier on which the knife support is movably mounted, means tending to move theknife support independently of said rel- I .ative movement to hold the knife against the pattern, means for locking the knife support to the carrier, mechanism for maintaining the locking means retracted during forward movement of the knife, and means operative during said relative retrograde movement of the knife and the pattern to release the locking' means to prevent said independent movement ofthe knife support to cause separation of the knife and the pattern.

11. In a sole rounding machine wherein a'knife travels arounda vpattern and is carried past its starting position by the momentum ofmechanism associated with the knife, in combination, a drum connected with said mechanisnna band encircling the drum and adapted to grip the drum, a spring-actuated plunger connected with the band, andmeans for releasing the band from the drum when themachine is started and for causing the i band to gripthe drum whenthe machine is stopped so that excess movement of the drum operates to compress the spring and recoil of the source of power has been disconnected.

from the knife support under the momentu m to carry the, knife, in combination, a spring, a clutch adapted to beconnected with-the knife support," and connections ,between the clutch and the spring constructed and arranged to operateastheflsource ofpower is disconnectedfrom the, knife support to compress the spring duririg movement of the knife past the starting 13011113. j t a i T 13.,Ina;sole rounding machine wherein a knife travels around a, pattern, anda knife supportmoves past thestarting point after the knife supporthas been disconnectedfrom the source :of :power under the momentum to carrythe knife, in combination, a sprin a clutch adapted to be-connected with the knifesupport, and connections between the clutchand the spring-constructed and ar 7 ranged to operate. as thei'source of power is star-tin position.

14. n-jasole rounding machine wherein a'knife travels around a pattern, in combination, a knife supportmovablegunder mom'entumto carry theknife past the starting point to insure complete rounding of theisole, a; spring, a clutchfadapted to be connected with the knife support, connections between the clutch and the; spring constructed and arranged,tocompress the springduring ex oess movement of the knife andto causethe' recoil of the spring to reverse the direction of movement of theknife, saidconnections comprising a dash 1 pot arranged gradually to arrest the reverse movement of the, knife, and means cooperating with said connections for positively limiting the extent ofreverse movement of the knife. 7

15. In a sole-rounding machine wherein a pattern and a knife are relatively moved totransfer the point of operation of the knife forwardly aroundthe'pattern and to a'point beyond the starting point of operation of the knife and then have relative retrograde movement, a carrier, means for relatively moving the carrier and patterntoward andfaway from each other inac;

cordance with variations in the peripheral contour of the pattern while the point of operation of the knife is being transferred,

a knife support movably mounted on the carrier, means for moving the knife support relatively to the carrier to maintain the knife and pattern in engagement while the point of operation of the knife is being transferred, means for locking the knife support to the carrier, and means carried by the means for effecting relative movement of the carrier and the pattern constructed and arranged to render the locking means effective during the relative retrograde movement of the pattern and the knife to effect separation of the pattern and the knife.

16. In a sole rounding machine wherein a pattern and a knife are relatively movable 10 to transfer the point of operation of the knife around the pattern and to a point beyond the starting point and thereafter to produce relative retrograde movement between the pattern and the knife, a carrier, a knife support movable relatively to the carrier, means for moving the knife support relatively to the carrier to hold the knife in engagement with the pattern, ratchet teeth 011 the knife support, a pawl on the knife carrier, a spring 20 tending to move the pawl into engagement with the ratchet teeth, a stronger spring normally holding the pawl retracted, and means operative during the relative retrograde movement between the pattern and the knife for overcoming the force of the stronger spring.

17 In a sole rounding machine wherein a knife after traveling around a pattern moves past its starting point and then is given so a retrograde movement, a carrier for moving the knifearound the pattern, a knife support movable relatively to said carrier to maintain the knife in engagement with the pattern,

means for locking the knife support to the as; carrier, mechanism for maintaining the locking means retracted during forward movement of the knife, and means movable during the retrograde movement of the knife to render the locking means operativeto prevent inward movement of'the knife support.

' In testimony whereof We have signed our names to this specification. a

' V I EGINALD BOYD VOODGOCK.

THOMAS AUBREY KEST-ELL;

CERTIFICATE OF CORRECTION.

Patent No. 1, 782,494. 4 Granted November 25, 1930, to

REGINALD BOYD WOODCOCK ET AL.

It is hereby certified that error appears in the printedspecification of the above numbered patent requiring correction as follows: Page 4, line 98, claim 6, strike out the Word "latter"; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 28th day of April, A. D. 1931.

M. J. Moore, (Seal) Acting Commissioner of Patents. 

